<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008 - 2009, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * CodeIgniter Model Class
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @category	Libraries
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/libraries/config.html
 */
class Model {

  var $_parent_name = '';

  /**
   * Constructor
   *
   * @access public
   */
  function Model() {
  // If the magic __get() or __set() methods are used in a Model references can't be used.
    $this->_assign_libraries( (method_exists($this, '__get') OR method_exists($this, '__set')) ? FALSE : TRUE );

    // We don't want to assign the model object to itself when using the
    // assign_libraries function below so we'll grab the name of the model parent
    $this->_parent_name = ucfirst(get_class($this));

    log_message('debug', "Model Class Initialized");
  }

  /**
   * Assign Libraries
   *
   * Creates local references to all currently instantiated objects
   * so that any syntax that can be legally used in a controller
   * can be used within models.
   *
   * @access private
   */
  function _assign_libraries($use_reference = TRUE) {
    $CI =& get_instance();
    foreach (array_keys(get_object_vars($CI)) as $key) {
      if ( ! isset($this->$key) AND $key != $this->_parent_name) {
      // In some cases using references can cause
      // problems so we'll conditionally use them
        if ($use_reference == TRUE) {
          $this->$key = NULL; // Needed to prevent reference errors with some configurations
          $this->$key =& $CI->$key;
        }
        else {
          $this->$key = $CI->$key;
        }
      }
    }
  }

}
// END Model Class

/* End of file Model.php */
/* Location: ./system/libraries/Model.php */